<template>
    <div>
        <!-- 顶部滑动条 -->
        <div id="slider" class="mui-slider">
			<div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
				<div class="mui-scroll">
					<a :class="['mui-control-item', item.id == 0 ?'mui-active' : '']" 
                    v-for="item in cates" :key="item.id" @tap="getPhotoListByCateId(item.id)">
						{{ item.title }}
					</a>
			    </div>
			</div>

		</div>
        <ul class="photo-list">
            <router-link v-for="item in list" :key="item.id" :to="'/home/photoinfo/'+item.id" tag="li">
                <img v-lazy="item.img_url">
                <div class="info">
                    <h1 class="info-title">{{ item.title }}</h1>
                    <div class="info-body">{{ item.zhaiyao }}</div>
                </div>
            </router-link>
        </ul>
    </div>
</template>
<script>
import mui from '../../lib/mui/js/mui.min.js'
import { Toast } from 'mint-ui'

    export default{
       data(){
           return{
               cates:[],
               list:[],
           };
       },
       created(){
           this.getAllCategory();
           this.getPhotoListByCateId(0);
       },
       mounted(){//当组件中的DOM结构被渲染好并放到页面中后，会执行这个钩子函数
        mui('.mui-scroll-wrapper').scroll({
                deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
            });
        },
       methods:{
           getAllCategory(){
                this.$http.get('api/getimgcategory').then(result=>{
                    if(result.body.status === 0){
                      result.body.message.unshift({ title: "全部", id: 0});
                      this.cates = result.body.message;
                    }else{
                        Toast("加载失败")
                    }
                });
           },
           getPhotoListByCateId(cateId){
               this.$http.get("api/getimages/" + cateId).then(result=>{
                   if (result.body.status === 0 ) {
                       this.list = result.body.message;
                   } else {
                       Toast("加载失败")
                   }
               })
           }
       }
    }
</script>
<style scoped>
*{
    touch-action:pan-y;
}
.photo-list{
    padding:10px 10px 0 10px;
    margin: 0;
}
.photo-list li {
    background-color: #ccc;
    text-align: center;
    list-style: none;
    margin-bottom: 10px;
    box-shadow: 0 0 10px #999;
    position: relative;
    
}
.photo-list li img{
    width: 100%;
    vertical-align: middle;
    border-radius: 5px;
}
.photo-list li .info{
    color: #fff;
    text-align: left;
    position: absolute;
    bottom: 0px;
    background-color: rgba(0,0,0,0.4);
    max-height: 84px;
}
.photo-list li img[lazy=loading] {
  width: 40px;
  height: 300px;
  margin: auto;
}
.info-title{
    font-size: 14px;
}
.info-body{
    font-size: 13px;
}
</style>
